DE2922204A1 - COPY DEVICE - Google Patents

Description

The invention relates to a copier or an image forming apparatus.

In the field of copiers, devices for simple black and white copying in natural format, Devices for color copying, devices for copying with changed image scale and devices for copying with automatic successive feeding of originals known. However, such copiers are general too large and too complicated to be acceptable to the normal user. Furthermore Complicated operations are necessary in such copiers, and they require low copying speeds. have the ability. In particular, those who have to make many copies of each of them consecutively fed documents are designed, a complicated structure and very low copying speed, so that they are therefore not suitable for high-speed copying although they save manpower. Further

VI / rs

909849/0865

Deutsche Bank (Munich) KIo 51/61070

Dresdner Bank (Munich) KIo. 3939844

Posischeck (Munich) loo. 670-43-804

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'With copiers of this type, inhibitions or malfunctions in the feed of the originals can result, which often leads to the destruction or damage of valuable originals.
5

Furthermore, for devices in which a fault detection is a sheet detection by optical reflection is applied, achieving a satisfactory Detection sensitivity difficult to detect because a -'0 of the sheet seldom brought into a position for the maximum sensitivity of the detection device can be. In particular, when the sheets are transported in a slightly curved state, there is such a thing Detection devices have a tendency towards detection errors that result in an increase in the disturbance and become more serious Malfunctions such as the original tearing.

The invention is based on the object

Copier with a simple and easy to use

to create an automatic document feed mechanism, in which the disadvantages listed above are avoided.

Furthermore, according to the invention, a copier is intended

can be created with a considerably increased copying speed.

Furthermore, with the invention, the function

or operation of one for several operating modes such as 30

the copying with changed magnification or the color copying of the copier is simplified to reduce copying errors.

According to the invention, a copier is to be improved in which an automatic template change

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follows.

Furthermore, the copier according to the invention is to be provided with a device that allows error-free and accurately detecting jamming of originals or image receiving sheets enables.

Furthermore, according to the invention, an automatic setting of the copier to a specific copier, art like one with a certain image magnification by adding an add-on like an automatic one Document feeder on the copier

take place.
15th

Furthermore, according to the invention, an advantageous further development of the copier is to take place in such a way that the power supply of the mentioned add-on or such an ^{add-on device is} separated from that of the copier.

The invention is also intended to provide a copier that can be quickly changed from

a common type of copy for a bound or nc.

Book template on a continuous copy type with automatic feeding of sheet templates allowed and results in increased safety and improved performance accuracy.

Furthermore, the copier according to the invention

enable a quick detection of inhibitions in order to prevent subsequent disturbances, and nevertheless do not require a special timing circuit for fault detection, so that thereby a simplified structure and an improved

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Functional accuracy are enabled.

The invention is explained below on the basis of exemplary embodiments with reference to the drawing explained in more detail.

Fig. 1-1 is a sectional view of an embodiment of the copier.

Fig. 1-2 is a perspective view

of the copier shown in Fig. 1-1.

Figures 2-1 and 2-2 are plan views of control panels that shown in FIG

Copier.

FIG. 3 is a block diagram of a control circuit of that shown in FIG Copier.

4, 7 and 8 are partial circuit diagrams of the circuit shown in FIG.

^iJ Fig. 5 are circuit diagrams of power supply

circuits of the circuit shown in FIG.

FIG. 6 is an operational timing diagram of FIG

30th

circuit shown in FIG.

9-1 to 9-3 are circuit diagrams of further embodiments of control circuits,

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Figures 10-1 through 10-3 are functional timing diagrams of the circuits shown in Figs. 9-1 through 9-3.

Figs. 11 and 12 are circuit diagrams showing the examples show for fault detection facilities.

Fig. 13 is a sectional view showing an example of original detection

shows direction.

14 is an operational timing diagram of that shown in FIGS. 11 and 12 Circuits.

Fig. 15 is a sectional view of another embodiment of the copier.

Fig. 16 is a sectional view of a conventional reflection detecting device.

Fig. 17 is a sectional view of a reflection detecting device in the copying machine.

Fig. 18 is a circuit diagram of a control circuit for the detector device.

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Pig. 1-1 is a cross-sectional view of a variable magnification copying machine equipped with a automatic document feeder, while Figs. 1-2 is a perspective view of the Is copier in which the automatic document feeder is swung up. Figure 2-1 is a A plan view of a control panel of that shown in Fig. 1-1 Copier, while Fig. 2-2 is a plan view of a control panel of the automatic original '" Feeding device is.

A drum 11, the outer periphery of which is made of three-layer Photosensitive material formed using photoconductive CdS material is rotatable ^ bar mounted on an axis 12 and begins in response to a copy start command in the direction of arrow 13 to turn.

When the drum 11 is up to a predetermined

Has rotated position, one is placed on a platen glass 14 placed original by means of a unit with a first scanning mirror 15 built-up illumination lamp 16 turned on, after which the light reflected from the original using the

first scanning mirror 15 and a second scanning mirror 17 is scanned or queried. When scanning, the first and second scanning mirrors 15 or 17 with a relative speed

ratio of 1: 1/2 shifted to a constant 30

to maintain optical path length in front of an objective 18 .

The rays reflected in this way

are via the objective 18, a third mirror 19 Oj

and a fourth mirror 20 out and on the Trom-

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'Mel 11 is focused at an exposure station 21.

Separately, the drum 11 becomes one (For example positive) electrostatic charge with the help of a primary charger 22 and then in the Exposure station 21 of the gap exposure with the image focused in the manner described above subjected.

^ O At the same time as the exposure, the drum becomes

a charge elimination or discharge by means of an alternating current discharge or a direct current discharge subjected to the opposite polarity to the primary charge from a discharger 23, after which they also a

'5 Total exposure using a total exposure lamp 24 is exposed to thereby create an electrostatic charge image with increased contrast on the surface the drum 11 to form. Then this becomes

Charge image in a development station 25 as a toneron

image made visible.

An image receiving sheet 27-1 or 27-2 contained in a cassette 26-1 or 26-2 is fed by means of a Feed roller 28-1 or 28-2 inserted into the device and

so conveyed to the drum 11, that with the help of a first registration roller 29-1 or 29-2 to achieve an approximate timing of the sheet feed and by means of a second registration roller 10 to achieve Accurately timing sheet feeding between the leading edge of the sheet and the leading edge of the drum formed toner image comes into agreement.

Subsequently, the toner image is on the drum 11 while passing through a gap between

the drum 11 and a transfer charger 9 on the Image receiving sheet 27 transferred.

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'After the image transfer is complete, the

Image receiving sheet a conveyor belt 8 and further one A pair of fixing rollers 7-1 and 7-2 are fed to which the transferred image is fixed by pressure and heat after which the image receiving sheet with the image thus fixed is ejected onto a tray 6.

On the other hand, after the image transfer, the surface of the drum 11 is in a cleaning station 5 cleaned with a resilient blade or squeegee, leaving the drum ready for the subsequent imaging cycle is prepared.

In the copier shown in Fig. 1-1, it is possible to print on the drum 11 a reduced image the information of the "*" placed on the glass plate 14 Generate template; this format reduction or reduction can be achieved in that the Position of the lens 18 according to the desired

Reduction amount is changed and the speeds of the first scanning mirror 15 with the illumination lamp 16 and the second scanning mirror 17 accordingly can be changed according to the amount of reduction. Such a method of downsizing is known so that it

is not explained in detail here.

Also shown is an automatic document feeder 4 in which 41 is a sheet supply hopper for storing the templates, 42 is a feed device for separating and feeding the Is templates, 43 is a setting device for placing the template on the glass plate 14, and 48 is a tray for recording the templates after use. The structure of the feed device 4 is from the copier designed removable, the adjusting device 43 as shown in Fig. 1-2 regardless of

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Sheet supply hopper 4ί and the feeder 42 can be opened.

2-1 shows details of a control panel 30 of the copier according to FIG Interruption of the copying operation, a key 36 for commanding the feeding of the image receiving sheets from the upper cassette 26-1 shown in Fig. 1-1 , a key 37 for commanding the feeding of the image receiving sheets from the conveyor shown in Fig. 1-1 shown lower cassette 26-2 and a display unit for displaying the sheet format selected by means of the key 36 or 37, this format being determined by a combination of a cam attached to the cassette and a microswitch attached to the copier

will.
20th

In part of the control panel is a recessed one Section 35 is formed which forms a size reduction operation unit and buttons 40-1 to 40-5 to select the desired format reduction or

^{ZJ accommodates a} reduction in size, the recessed portion 35 being provided with a sliding cover 39 to cover it. Of these keys, for example, the key 40-2 commands a copy at a reduction of 1: 2 in order to make a copy in the

A4 format, as well as the choice of the paper feed roller for the cassette that receives the image -B contains A4 size sheets. The lid 3 9 can be moved in the direction of the arrow so that it covers the keys 40-1 to 40-5 and thereby their actuation

prevented; when the cover 3 9 is

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opens, lie, the keys free so that they can be operated can be.

Figure 2-2 is a plan view of an operation panel 50 for the automatic document feeder 4 attached to a flat portion of the device; in the figure are a Power supply switch SW1, a key 51 for successive Feed of the originals contained in the supply hopper for copying, another key 52 for manually setting an original for copying and a next key 53 for interrupting the automatic Feed shown.

The following briefly describes the function of the Automatic document feeder shown in Figs. 1-1 and 1-2 4 explained.

First, the originals to be copied are placed in the supply hopper and both the copier and the automatic document feeder are supplied with power. By pressing the automatic feed button 51 on the control panel 50 of the feeder 4 and the copy start button 32 on the ^is} control panel 30 of the copier, a feed roller 60 of the device conveys the originals to a separation roller 61, which detaches the bottom original and to one Registration roller 62 conveyed out. This registration roller 62 that normally stopped

is operated at a predetermined timing for a period of time necessary for conveying an original driven, whereby this original is fed to a belt 63 above the original platen glass plate 14 is kept in circulation. That way

document held by friction on the belt 63

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promoted until they have a previously with a predetermined Timing reached lowered gripper 46, and stopped in this position. The belt 63 runs thereafter for a short period of time until it is stopped at a predetermined timing; During this period of time, the belt 63 grinds over the original, thereby creating a possible diagonal position of the Template can be corrected. The Forward displacement of the illumination lamp 16 and the Mirror 15 and 17 of the copier initiated to the To bring about scanning, by the manner described above, a copy image on an image receiving sheet is achieved. After copying has been completed, the number selected by means of the dial 31 will be the automatic document feeder 4 is supplied with an end signal to raise the gripper 46 and to start the circulation of the belt 63 again, by means of which the original is ejected away from the glass plate 14. Simultaneously with the ejection process, the rollers 60, 61 and 62 started to feed the subsequent document to the belt 63; this will make the up to the beginning the time required to copy the subsequent original is reduced to a minimum. So that can by exchanging the originals in succession in this way, continuous copying is achieved will.

The automatic original-feeding device 4 is provided with detectors 44 and 45 for determining the pre- ^ou hand being a template, wherein the detector 4 4 for determining a template inhibition or a template clamping to the release roller 61 and the registration roller 62 is used, while the detector 45 is used to detect an inhibition or an ejection failure

on the adjustment section of the belt 63 is used. Everyone

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of these detectors 44 and 45 is a light reflection detector with a photo receiver, the one with several Light emitting diodes is combined. The belt 63 is grounded to the main frame to prevent friction with the original eliminate accumulated electrostatic charges.

The automatic document or document feeder 4 is hinged to the copier so that that it is pivotable from the front to the rear of the copier and thus as shown in FIG 1-2 can be lifted off the glass plate 14. A switch FS is attached to the device, which the Power supply to the feeder automatically interrupts when it is on the one described above Way is raised; this prevents their erroneous operation and the safety itself in that This ensures that the power switch SW1 or the copy start key is mistakenly operated.

Fig. 3 is a block diagram of the control circuit of the copier shown in Fig. 1; the Figure shows a sequence control unit ADFC for the automatic document feeder 4, a copy control unit COPYC for

^ ^J the sequence mode and the magnification of choice in the example shown in Fig. 1 copying machine, power switches SW1 and SW2 corresponding to those in Fig. 2-1 and 2-2 shown, buttons 51 to 53 for the automatic feeding, the manual feed and stopping,

corresponding to those shown in Fig. 2-2, a copy number dial 31, a copy start button 32, a stop button 34 and switches 40 for changing the magnification, which correspond to the elements shown in Fig. 2-1, and a magnification change command switch 39-1 which is set to the right and left, respectively

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Connection is switched when the cover 39 shown in Fig. 2-1 is opened or closed.

The ADFC control unit gives various output signals from, of which a signal DOUT is used to actuate a plunger to raise the gripper 46, a signal IM2 is used to start a motor for driving the belt 63 and a signal DFR for coupling a Coupling for driving the rollers 60, 61 and 62 to the belt motor is used. It is also used for the output signals the copy control unit COPYC a signal OPT for switching on the loaders 22, 23 and 9 with synchronization with a further output signal IM1 for starting a motor. M1 for driving the drum 11, a signal PF to start the paper feed rollers 28-1, 29-1, 28-2 and 29-2, a signal RGR for starting the registration roller 10, a signal FAW for turning on the lighting. lamp 16 and to initiate the advance of the optical system from the illumination lamp 16 and the mirrors

^iyj 15 and 17, and a signal BAW for initiating the return movement of the optical system after completion of the exposure; the consumers for the above-mentioned signals are correspondingly attached couplings, which are connected to the motor M1 by the respective signals.

are lockable. Furthermore, an output signal RD is used to set the above-mentioned mirror to predetermined values Layers in response to the actuation of one of the magnification change keys 40-1 through 40-5 as well to change the scanning speed of the optical

System to a predetermined value in order to achieve copying with the selected image magnification. Furthermore, the copy control unit COPYC takes input signals BP1 and BP2 to determine the position for the Stopping and reversing the displacement of the mirror 15 by microswitches 100 and 101, respectively (Fig. 1-1) are generated, which are switched by means of the mirror and are arranged in layers that the lengthways dimensions of A4 size originals and A3, respectively; the control unit also takes

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an input signal RG for starting the registration roller 10, which is generated by a microswitch 102 which is arranged in the displacement path of the mirror 15 is. The control unit ADPC of the automatic feeder outputs a feeder malfunction signal to the control unit COPYC of the copier ADJ in order to block the start of the copying process if a malfunction is detected in the feeding device 4 as well as a document or template error signal ADP, so that when there are no more templates are contained in the supply hopper 41, the copying .zu finish after the original on the glass plate in the set frequency has been copied. The detectors 44, 45 and 47 each generate original. detection signals FDPT, FDP2 and FDP3. Consequently will the signal ADJ generated by the disturbance determination by means of the signals FDP1 and FDP2, while the signal ADP is generated in response to the signal FDP3. SWS is a signal that is generated by energizing one of the devices shown in Fig.

Relay K1 shown is generated when the automatic document feeder 4 hits the document table glass 14 is in place and the power supply switches SW1 and SW2 are closed, for example select a size reduction ratio from A3 size to A4 size. A / M is one of that Automatic feed / manual feed switch generated Signal used for manual feeding of the feed rollers 60 to 62 of the automatic document feeder 4 after completion of the copy cycles for one

Original in the preselected number does not start and the feed rollers after such completion of the Start copy cycles on the automatic feeder. From those from the copier's control unit COPYC connected to the control unit ADFC of the feeding device

placed signals, CJ is a signal to interrupt the function of the feeder in the event of a Image receiving sheet inhibition or disturbance in the copier and BPS a signal that starts the belt 63 and the rollers 60 to 62 for changing the

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Submission to the determination of the position of the mirror 15 at its reversal position is generated after the completion of scans in the number selected by means of the adjusting disk 31.
5

FIGS. 5A and 5B each show a power supply circuit for the control unit AFDC and COPYC, with voltage reduction transformers 500 and 501, rectifiers 502 and 503, Smoothing capacitors 504 and 505, constant voltage circuits VC1 and VC2, the switch FS, which is used for excitation a relay K1 by the pressure of the feed device 4 when it is placed on the copier is actuated, whereby for switching contacts 404

'5 and 405 in the state shown in Fig. 4, the excitation then occurs when both the feeder power switch SW1 and the power switch SW2 of the copier is closed and a relay K2 is shown which is energized when the switch SW2 is closed; This is via a contact kO of a relay KO after closing the switch SW1 by rectifying and smoothing an AC supply voltage and stabilizing it by means of the constant voltage circuit VC1 obtained DC voltage VB1

delivered while not delivered when the power switch SW2 is not turned on, d. H. the copier is not ready for operation, or if, as shown in Fig. 1-2, the feeder is lifted from the glass plate so that the

Switch FS is open, whereby the function of the feeder is blocked; in contrast, the Power supply voltage VB2 for the copier regardless of the state of the switch SW1 or the Position of the automatic document feeder

released so that copying can be carried out

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can when a bound or book original is placed on the glass plate 14 and the copy start button is operated.

In the following, the successive operations will be described with reference to the timing chart shown in FIG briefly explained. When the automatic document feeder is placed on the glass platen and the Auto feed is selected in response to the closing of switches SW1 and SW2 and the operation the copy start key 32 (CPB), the rotation of the drum motor M1 by means of the signal IM1, the rotation of the tape motor initiated by means of the signal IM2 and the function of the loader of the copier. Be at the same time the rollers 60, 61 and 62 are rotated by the signal DFR for a predetermined period of time feed an original to the belt, whereupon the belt advances the original so that it is the (as a stop serving) gripper until the drum one full turn out of its holding position has executed. After the full revolution, the signal FAW is issued to enable the forward movement of the optical system, but this forward shift is initiated after stopping the belt motor, in order to prevent the original from shifting by means of the belt. The image receiving sheet is pulled out of the cassette by means of the feed roller 28-1 at the same time the drum starts rotating

fed, but the registration roller 29-1 starts on

to turn only after the belt motor has stopped.

Since the drum cleaning and sheet feeding are done before the original is set, it is It is possible to start the exposure immediately after the original setting, which reduces the copying speed.

Ever since it has been significantly increased. After the arrival of the

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optical system at the reversal position according to the signal BP (switch 100 or 101) becomes the signal FAW is replaced by the signal BAW, whereby the exposure is completed and the backward shift of the optical system is initiated. Then the second exposure is initiated when the drum a drum home position (signal DHP) has been reached. If, for example, by means of the adjusting disk 31 selected number of copies is "2" is determined after determining the reverse position after the second exposure, the BPS signal is output to the original eject signal DOUT for lifting the gripper 46 for a predetermined period of time with the aid of the plunger and the signal IM2 for ejecting the original by means of the belt. Simultaneously by means of the signal DFR sets the rollers 60 to 62 rotating again in order to feed the subsequent document. In this way the document is ejected by determining the last arrival of the optical system at the reversing

^iKi position so that it is possible to change originals at the same time as image transfer and drum cleaning, thereby improving copying performance. If the detector 45 detects a non-ejected original at the falling end of the signal DOUT, namely when the gripper is being lowered, ie the signal FDP2 has the status "1", the signal ADJ is output to indicate the fault status on the display device. Further, if at the time of stopping the tape after the original is detected by the detector 44, the detector

45 does not detect the original, the original error is displayed on the setting device 43. Because the signal IM2 is switched off a short time after the original has arrived at the right place, this signal IM2 can interact with a fault timer with a certain time delay

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be used.

In the manner described above, two copy cycles are carried out one after the other for a respective original performed.

The above-mentioned document feed does not take place when the feeder is in manual feed mode is switched. Furthermore, the original is not fed when the signal ADJ is present for the display of a Fault in the feeder, the signal CJ for the indication of copy sheet inhibition, the signal ADP for indicating the lack of originals in the feed hopper or the signals STOP1 and STOP2, respectively pressing the stop button on the feeder or on the copier.

The above-described function can be achieved by means of a circuit shown in FIG is, in which AND gates 701 to 703 for the actuation of the feeder rollers, OR gates 704 and 705, Inverters 706 and 707 and timers 708 to 710 are shown, which on the rising edges of their input signals, the timing signals shown in Fig. 6 for control the feed rollers, the belt or the gripper.

Fig. 8 shows an example of the control circuit for the copier, wherein AND gates 801 to 809, OR gates 810 and 811, flip-flops 812 to 814,

which are switched on or off at the leading edge of the input signal at input S or R, a counter 815, which is used to store the means of the Dial 31 selected number of copies is formed and which emits a signal "1" when the number of Arrivals at the reversal point becomes equal to the set number of copies, and an inverter 8} 6 are shown.

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When the switch FS is open, a signal FSS assumes the status "1" in order to enable copying by hand. as soon as the adjuster is raised. The signal SWS assumes the state "1" when the relay K1 is energized is', this relay K1 is set to the position for copying when the automatic document feeder 4 is placed on the glass plate.

The OHP signal is emitted by means of a microswitch 103 actuated by the optical system, when the optical system has returned to its original position. Signals Siza and Sizb are copy format command signals corresponding to the cassette selection by means of the control panel 30, the former. , one The signal corresponding to the smaller format is that of the one placed at a shorter distance on the path of the optical system Switch 100 selects generated signal BP1, while the latter, a larger format corresponding signal similarly selects signal BP2, thereby determining the scan length. When the automatic However, the document feeder assumes the signal SWS to the state "1" in order to select the shorter scan length and to force the cassette for the smaller format.

If the feeder is not attached to the copier, the drum rotation and the Scanning initiated in response to the FSS signal and the copy start key signal CP. After graduation the scanning of the desired format becomes the signal BP

^{ου released in} order to switch off the FAW signal, switch on the BAW signal and switch the counter 815 on from zero. When the optical system returns to its starting position, the signal BAW is switched off and the signal FAW is switched on under a predetermined time control in order to repeat the copying cycle. If the

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Copy cycle is repeated a number of times equal to the preset number of times in the counter 815 The copying process is ended via the OR gate 811 and the AND gate 803. If the outer circumference of the drum is seamless photosensitive material is constructed, the signal FAW can be sent immediately after receiving the home position signal OHP for the optical system can be turned on, which enables continuous copying is.

If the automatic document feeder is mounted on the copier, the drum will rotate initiated by the signals SWS and CPB. The scanning is done after feeding and setting the original initiated, after which the cycle described above is repeated after the completion of the scan for the A4 format. will. The size reduction from A3 size to A4 size takes place while the original is being fed and set. Further, in the case of using a seamless photosensitive material, scanning can be performed immediately after Original setting or the stopping of the belt drive can be initiated. The template setting can be changed using of the sensor or detector 45 can be detected. In this way, if a seam-

^ 5 loose photosensitive material reduces the copying speed can be increased considerably.

If the signal STOPL, STOP2, CJ, ADJ or ADP is produced, the last signal BPS is delivered in the reverse ^ "position BP for this cycle to end umden copying. The drum is however stopped by the drum home position signal DHP, that is generated when a home switch is attached to the drum by means of a switch

Cam is actuated.

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Fig. 4 is a circuit for selecting the copy magnification; in Figure 4, 39-1 is the switch to choose "true format" or "reduction" copying by closing or opening the cover 39; thereby will a lamp 401 switched on or a lamp 402 switched on and the selection of the reduction modes possible; 403 is a group of switches each used to select one of the reduction modes and each correspond to keys 40-1 to 40-5 shown in Fig. 2-1; 404 to 405 are the contacts that use of the relay K1 can be switched to the left connections when the feeding device placed on the glass plate is powered; 420 is a contact that is independent of the function of the switch group 403 Selecting a format reduction from A3 to A4 format is opened; 406-1 is a buffer amplifier for the reduction mode signal; 4O6-2 through 406-4 are Latch circuits such as flip-flops that store the signal during the copying process; 407 to 411 are light emitting diodes for indicating the types of reduction copying; 422 is a differentiating circuit for formation a trigger signal for circuit 407; LATCH is a signal for rewriting the contents of the buffer circuit, that during the time outside

■ "of the copying process is generated.

The function of the circuit described above is as follows: When the automatic document feeder is not attached to the copier or

is lifted from the glass plate of the same, the switch for the Format reduction from format A3 to format A4 closed, whereby a diode 421 and the contact 420 of the light emitting diode 407 and the buffer circuit

406-2 power is supplied to provide an output for

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to generate the setting of the copier to the size reduction. On the other hand, if the automatic Document feeder is attached to the copier, the contact 420 is open while the switch 405 is switched to even without a command for a format reduction from A3 to A4 format the. to switch on the corresponding buffer circuit 406-3, whereby the copier to this type of format reduction is switched. At the same time, as shown in FIG. 8, the signal SWS causes the inevitable selection of the reverse position BP1 and the actuation of the upper feed roller 28-1, if in the upper one Cassette that contains A4-size sheets, regardless of the position of the cassette selection switch 3 & and 37. In this way, originals of a certain size (such as A3 size) repeatedly with size reduction to another specific size (such as A4 size) on the sheets of the corresponding format can be copied. This enables the operation of the automatic document feeder and the copier can be extremely simplified because by simply attaching the feeder the image magnification is clearly defined.

Furthermore, it is not possible to start the copying process incorrectly without setting the template, as neither the feeder nor the copier are functional unless both are powered. Furthermore, the copier is versatile in that

^ou can be used for ordinary copying without using the automatic document feeder. In addition, a template may be in a format _m, which is unsuitable for automatic feeding, are copied to the manner that they supply apparatus templates and the copying machine is inserted between the automatic; this makes it possible to have an automatically feedable

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To copy an original and a non-feedable original onto one and the same image receiving sheet by this feedable template is guided between the glass plate and the format template.

It can also be seen that in the copier as an additional device, not only the automatic document feeder, but also an original feeder for manual feeding can be used.

If the copier is a color copier, it is possible to change the individual colors (such as Black and red) if such an additional device is attached to the copier.

The following are various sequential modes of operation of the automatic document feeder and the copier. As described above, after setting the template, you can click the glass platen according to the conditions of the automatic document feeder and copier, and different control sequence operating modes can be selected according to the commands to this. Furthermore can in the event of a fault in the copier or the stop command, a better sequence control can be selected, in order to restart the copying process quickly after the malfunction has been rectified or the number of copies has been changed to enable. Table 1 shows various modes of operation in the case that sheet originals are fed are selected by means of the automatic document feeder, as well as in the case that the feeder is raised to insert the original and then closed again.

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a.

b. c.

e. f.

I.Hand- l.Zuf.-2 Multiple-3. Aus 4 -Mäch- ⁵ · Mehrf. once, once. Kbp. push the bait.

Zuf.-eiiist.

- O O O O O

k.

m. n.

t. AND MANY MORE

O O O O

interrupt interrupt interrupt

O O

O O O X O O X X O X X X X O O O X O O X

Normal operation with

CPB

STOP2 (3, 4)

STOP, ADJ, MAN etc.

X X X χ - STOP2 (2) interrupt O O O interrupt O O X STOP2, CJ interrupt O X X interrupt X X X

CPB after "STOP" or malfunction

STOP2 (3, 4)

STOP, ADJ, MAN, etc.

STOP2, CJ, etc.

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In Table 1 above, modes a to 1 are those for original-feed copying using the AUTO (automatic feed) and CPB, where 'a is the normal auto-feed mode in which copying continues until the originals in the supply hopper are exhausted; b to d are operating modes for multiple copying of a single original. In operating mode b, the setting of the The next original takes place, but the copying process is initiated, corresponding to an actuation of the stop key STOP2 while the next original is being set or before the previous original is ejected copying is started again using the CPB key, and the original is ejected in mode c takes place after copying is completed, but no setting of the next original, as is the case, that during the original setting or the multiple copying an actuation of the stop button STOP1 the Feeding device takes place, copying takes place with the MAN (manual feed) and CPB switches, or there is a fault occurs due to an original ejection error (ADJ3), where copying is then resumed after the fault has been eliminated using the AUTO and CPB switches can be, and in the mode d, neither the ejection nor the feeding of the next original takes place and the settings area as shown in Fig. 1-2 can be opened to adjust the position of the original can be seen and then closed again to continue copying with the automatic feeder,

this continuation is represented by the modes m to w.

The operating mode e is used to make copies not of

the first original fed in, but the next

To make a template, while the modes f, g and h each with this type of copying the modes b, c and d correspond. The automatic document feeder

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'can be provided with a key for this operating mode h which makes it possible after checking the original position on the glass plate using the copy start button Make multiple copies. Furthermore, the operating mode g can be used exclusively for the

Ejection button or otherwise achieved by means of the stop button for the automatic document feeder will. In this way, the operating modes e or f by combining the operating mode g. with the operating '" art a or c can be brought about.

Furthermore, the operating modes e to h correspond to the case of a fault in the separation in the feed device (ADJ1) or when setting the original. In this case, the feeding device can be selected in this way are made to stop completely (mode h), only perform the ejection (mode g), the ejection and executes the setting of the next original (mode f) or executes the ejection and the

Original feed continues (mode e); however, the ejection is preferably carried out in one This was done by hand as the automatic eject could damage the original.

The operating modes i to 1 are the sequence

Operating modes which are determined by the conditions of the copier which the case of actuation of the Stop button STOP2 or a copier malfunction (CJ) during multiple copying when the cassette is emptied or correspond to other disorders; the copying process is then carried out for the copying cycle that has just been carried out interrupted without ending the number of cycles set in advance. The operating mode i is used for Continuation of copying from the next original after interruption by means of the stop button and is in the In the event that the copy command just executed

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is not canceled for the original. In the j and k modes, the original is ejected and adjusted of the next template only in the event of an interruption ■ by means of the stop button or due to the fault. In mode 1, the automatic document feeder becomes decommissioned after the interruption, with the remainder of the copying for the existing one Submission can be resumed quickly after the fault has been rectified or paper has been refilled, wherein the resume modes are represented by modes m to w. The modes of operation m to ν are used to replace the template on the glass plate after a template malfunction or during the To insert an urgent copy in the sequence of the continuous copying made with the feeder.

The modes ρ and w correspond to normal copying without using the automatic document feeder.

FIGS. 9-1 and 9-2 show another example of a control circuit for implementing the method shown in FIG Various modes of operation shown in Table 1, the operations of which are shown in Figs. 10-1 to 10-3.

In Fig. 9-1, AND gates 720 to 725, an OR gate 726, inverters 727 to 729 and timers 730 to 732 are shown, the different times of which are shown in the time diagram. In Fig. 9-2 are timers 820 and 821 with time lengths according to FIG

Representation shown in the timing diagram, while the other components correspond to those shown in FIG.

Fig. 9-3 shows a method of connection

of the signal lines between the feeding device and 35

the copier by means of a relay attached to the signal output side, such an arrangement

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effective in the case that the power supply voltage for the control in the feeding device is different from that in the copier.

10-1 shows the timing in the event of a copier malfunction (CJ), a stop command STOP2 or a cassette emptying PEP, whereby the copier remains in standby mode with no original ejection and the set number of copies and the remaining number of copies

to be kept. After eliminating the fault, the exposure can be switched on by pressing the AUTO or MAN button and the copy start key are resumed, the timer 820 in Fig. 9-2 via the AND gates 721 and 720 is switched to generate the signal FAW.

After the remaining copy cycles are completed, the automatic document feeder will function continued in the manner described above, although in the case of actuation of the manual feed button the

Procedure "ADP" is carried out.
20th

10-2 shows the procedure in the case of the lack of originals ("ADP ¹¹ ), in which the ejection is carried out by means of the signal BPS, but no next original is fed because the signal DFR at the AND gate 724

Is blocked.

Fig. 10-3 shows the case of a malfunction in the automatic document feeder, in which case the subsequent sampling by means of the AND gate

725 is blocked because the flip-flop 812 by the. falling edge of the tape control signal set will.

The examples explained above are particularly useful in the event that to improve the

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speed a seamless photosensitive material used on the drum.

The signal FAW is switched simultaneously with the detector circuit or a predetermined period of time thereafter. In FIGS. 9-1 and 9-2, it is possible, in the event of a malfunction, to determine the number of to copy disturbed copies the same number of copies when the copying process is resumed and then change the template.

Fig. 11 shows an example of a circuit for failure detection in the automatic document feeder; where FDP1 and FDP2 are template detection signals output from the original detectors 44 and 45 shown in Fig. 1-1, respectively,

201 an OR gate for resetting a flip-flop

202 in response to the signal FDP2 which is set by means of the detection signal FDP1, IM2 is the motor drive signal for the band 63, 203 is an AND gate for detecting the output signal Q of the flip-flop 202 by means of the timing signal IM2, DJAM is a signal which by its state "1" means the Indicates the presence of a fault, PURS an initial reset signal to reset the circuits when power is supplied to the feeder by closing the Power supply switch SW1 is, 204 and 205 inverters to reverse the signals and 206 a diode to counter

power is blocked.
30th

In the operation of this circuit, the power supply switch SW1 is first closed to thereby to enable the signal PURS in the "0" state, whereby the OR gate 201 and the inverter 2O4 each to the States "1" and "0" are switched and the flip-flop

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202 is reset to produce an output signal Q in the "0" state.

After pressing the copy start button 32 shown in Fig. 2-1, the rollers 60, 61 and 62 are moved. starts and the signal IM2 is asserted to drive the belt motor for a predetermined period of time. After a document advanced by means of the rollers arrives at the detector 44, the signal FDP1 changes to the state "1", whereby the output signal Q des Flip-flops 202 changes to "1" and thus the AND gate 203 switches to the "1" state. In this state the signal DJAM is "1" since the signal IM2 is "0". In the case of the proper supply of the Original, the original reaches the detector 45 before the belt motor stops, thereby generating a signal FDP2 with the level "1" is achieved, so that the OR gate 201 and the inverter 204 each to the states "1" and "0" are switched, whereby the flip-flop 2O2 is reset. In this way there is the AND gate 203 emits an output signal "0", which is a signal DJAM with the value "0" to indicate the absence of a malfunction results. On the other hand, if the original is stopped on its way, the signal FDP2 remains in the state "1", so that there is therefore no resetting of the flip-flop 202. Since, therefore, the input signal to the AND gate 203 on the Level "1" remains, its output becomes "1" when the tape is stopped (IM2 = 1), resulting in a disturbance signal DJAM. This signal holds the relay that blocks the feed of the copy sheet, so that the start of the copy cycle is blocked and a corresponding one Display takes place, whereby the hold state of the relay is maintained until manual release will. The drive time for the belt motor is chosen so that the motor shortly after reaching the gripper

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46 stops by the original, so that therefore the belt 63 only grinds over the original after it has been by means of of the gripper 46 has been stopped.

Since the malfunction is detected by means of the signal for controlling the belt drive, it is possible to do it quickly to detect an original failure on the glass plate 14 and improved detection accuracy with a simplified circuit even without a timer, etc. achieve as it was previously used for troubleshooting became.

Furthermore, it is possible to quickly avoid an original malfunction when the original is being fed to the belt 63 to be detected by the detector 45 at an intermediate point in the image-free area of the setting section is arranged and the switch-off signal of the rollers 61 and 62 as a failure test signal instead of the IM2 switch-off signal is used.

Fig. 12 shows an example of a circuit for determining a after completion of the copy cycle Any remaining original when ejecting the original, DOUT being the signal for lowering the Gripper 46 and 211 is a flip-flop. In this circuit, the flip-flop 211 is when the Power supply switch is reset and a signal "1" is then applied to input D of the flip-flop, when the fed document reaches the detector 45.

When the optical system (such as the mirror) after the copy cycles have been completed the preselected number of times reaches the reverse position, the signal DOUT is released to raise the gripper 46 and the tape 63, thereby ejecting the original with the DOUT signal maintained for a period of time T2 that is necessary for the ejection of the original at normal

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operation is necessary. After the completion of the ejection, the signal FDP2 becomes "1", so that the signal becomes the input D of the flip-flop 211 changes to "O", whereby the leading edge of the signal DOUT to lower the The gripper does not change the output signal of the flip-flop 211. However, if for any reason the submission remains in the device, the flip-flop 211 gives the output Q at the - leading edge of the signal DOUT the signal "1" off, so that the signal DJAM changes to "0" and thus the disturbance is indicated by a remaining original will. The following functions correspond to those explained in connection with FIG. Furthermore, it is in the case the circuit according to FIG. 12 is possible, a different one from the display for the fault according to the explanation in FIG. 11 Form display. It is also possible to detect whether the DOUT signal is generated at the same time as the Detector 44 determines the original and, if this is not the case, the procedure described above for

to record the feed failure DJAM. 20th

This malfunction determination procedure is not only effective when there is a malfunction in the automatic document feeder, but also in the event of a fault in the transport of the image receiving material in the copier applicable. In this case, the failure detection can be achieved by using an image receiving sheet detector is arranged immediately in front of the transfer station or the rollers 29-1 or 29-2 and that Function switch-off signal for rollers 28-1, 29-1 etc.

is used as an interference check signal.

Fig. 14 is a timing chart of various signals in normal transportation.

As can be seen from FIG. 6, the

Detector 45 used when the exposure lamp 16 is off

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'is switched; therefore, there is no risk of malfunction even in the event that the Reflection detector is arranged near the glass plate for receiving the original.

Fig. 15 shows an example of a copying machine provided with original reflection detectors 45F and 45R, each for detecting the leading edge and the trailing edge of the original ver - '^ be turned; the other elements of the copier are the same as those shown in Fig. 1-1. The detector 45F detects whether the leading edge of an original 147 fed from the feeder 42 is within a A predetermined time has reached a predetermined position in a gap 144 while the detector 45R detects the trailing end of the original. A possible failure of the determination either by means of the detector 45F or by means of the detector 45R indicates that the original has not arrived, i.e. it has not arrived. H. a fault or

Inhibition in the space or gap 144 is present.

Fig. 16 shows a conventional reflection detection or detector device; a phototransistor PT1 acting as a photoreceiver are a

Lens system PT1L for the phototransistor PT1, one Light-emitting diode LD1 acting as a light transmitter, a lens system LD1L for this, a carrier 151 with a black one Surface, an illumination opening 152, which is formed in the carrier, around that of the light-emitting diode LD1 To guide emitted light, a diffusion light guide opening 153 for supplying the light diffusely reflected from the original 147 to the phototransistor PT1, an incident optical axis 154, an optical axis for diffuse reflected light, a printed circuit board 156 with lead wires 161 and 162 and a connecting element 157 are shown. If the template is in the

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Gap 144 is conveyed, the incident from the light-emitting diode LD1 along the optical axis 154 are Rays are diffusely reflected by the surface of the template 147, after which the along the optical axis 155 diffusely reflected light is picked up by the phototransistor PT1, thus indicating the presence of the original 147 to capture.

However, in this conventional apparatus, if the original 147 is in an upper portion of the gap 144 is, as shown by the dashed line 147 ', the optical axis of the reflected light offset to the left because the reflection part is offset upwards; through this the phototransistor PT1 receives hardly any or little

reflected light. This disadvantage can be avoided in the embodiment shown in FIG. 17, in which components with the same function as the components in FIG. 16 are denoted by the same reference numerals provided with a prime-2 "index LD1 two light-emitting diodes LD2 and LD3 are provided, which are attached to a carrier 151 'at the same angle but at different heights, whereby the ^J diffuse reflected light can be safely received by the phototransistor PT ¹ with high reliability regardless of whether the original 147 is low as shown by the solid lines or as shown by the dashed lines

is high.

On the transport for the original or the copy sheet, it is generally not possible, the determine the exact position of the paper as it is in a

somewhat corrugated condition is transported. The detector in the embodiment described above is

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- 44 - B 9693

especially useful to ensure a safe detection function.

Although in this embodiment two light transmitters are provided, it is of course possible to ensure a further detection area three or more light emitters to use.

Furthermore, in the embodiment described above, the detector is in conjunction with FIG Original detection in the copier described; the detector is of course also used to detect disturbances on the copy sheet or or for any others

Investigative purposes applicable.
15th

FIG. 18 shows a circuit for driving the detector device described above shown / with the appendices F and R respectively the leading edge determination and the trailing edge determination affect. Light emitting diodes LD2F, LD3F, LD2R and LD3R are connected to a direct current source DC via an oscillator circuit OSC connected in series, which has an oscillation frequency of approximately 1 kHz, so that the light-emitting diodes light up intermittently at the same frequency,

To increase the light output of the light-emitting diodes, an increased current is necessary, but this is a shorter one Can result in lifetime of diodes; the intermittent activation described above is used to

to eliminate this danger.
30th

When the reflected light is received, the phototransistor PT generates a similarly oscillating one or oscillating output signal, which is rectified by means of a diode D and by means of a capacitor C is smoothed in order to turn on transistors Tr1 and Tr3 and to turn off a transistor Tr2.

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In this way, when the reflected light is received by both the phototransistor PTF and through the phototransistor PTR an OR gate OR input signals, both of which have low levels, so that the OR gate emits a low level output signal. On the other hand, if the reflected light from none of the two phototransistors is received, the OR gate outputs a high level output signal that the Indicates the presence of a fault. That way will

'"a failure signal is obtained in the event that the original is not properly aligned on the glass plate, being due to the ANDing of the foregoing Failure check timing signal and output signal of the OR gate OR performed a safety function

'^ will. If, as in the exemplary embodiment, the setting band 63 is kept in constant circulation, the template can, under certain circumstances, be folded up by means of the band However, the device explained above enables such a condition and to be detected

the implementation of suitable security measures. It is also possible to move in the direction of advance of the original to provide several trailing edge detectors and these detectors according to the format of the original optionally to use.

It should also be noted that the distance between the leading edge detector 45F and the trailing edge detector 45R is chosen to be slightly smaller than the length of the original.

The invention provides a multi-type copier which has a copier type selector, a first Control device which, in response to the function of the selector, initiates the copying process in accordance with a brings about a certain type of copying chosen in this way,

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an original document feeder and a second controller which, when set the feeding device in an operating state the copying process in a certain operating mode without Brings about election by means of the voter.

9098A9 / 0Ö65

Claims (31)

Claims 1. Multi-type copier, characterized by an image generating device (5-29) for training a copy image of an original on a copy material (27), a copy type selection device (40) for execution of the copying process with a desired type of copying, a first control device (COPYC) that responds on the function of the selection device, the copying process according to a particular type of copying selected in this way executes, a feed device (4) for transporting the original to a copying station and a second control device (ADFC), the copying process without selection by means of the Executing dialing device in a special type of copying. 25th 2. Copier according to claim 1, characterized in that that the type of copying is an operating mode with image enlargement change and that the selected type of copy is a mode of operation with a certain magnification change ratio is. 3. Copier according to claim 1, characterized in that that the copying mode is a mode of copying the original image onto a sheet of a desired size and that the type of copy selected is a mode of copying onto a specific sheet size. ^{VI / rs} Deutsche Bank (Munich) Account 51/61070 909849 / ΟδβΒ - 2 - B 9693 4. Copier according to claim 1, characterized in that the type of copying is an operating mode for copying of the original image is in a desired color and that the type of copy selected is a mode of copying with a certain color is. 5. Copier according to one of the preceding claims, characterized in that the copying point is a glass plate (14) for placing the original, the feed device (4) for transporting the original to the glass plate and stop the originals on the same and away from the copying station is pivotable and the second control device (ADFC) is designed so that the particular type of copying selected when the feeder is attached to the copy station. 6. Copier according to one of the preceding claims, characterized in that the first control device (COPYC) is designed so that the copy type selection by means of the copy type selection device (40) is enabled when the feed device (4) is removed from the copier. 7. Copier according to one of the preceding claims, characterized in that the second Control device (ADFC) is designed so that it can carry out the copying process according to a specific type of copy regardless of the type of copy Selection by means of the type of copying selection device (40) brings about . 8. Copier according to one of the preceding claims, characterized in that the feed device (4) is provided with a drive source (Fig. 5A) and a switch (FS) which is closed 909849 / Ö88S - 3 - B 9693 is when the feeder is attached to the copier, the second control device (ADFC) is designed so that in response to the operation of the drive source and the switch, the selects a specific type of copy. 9. copier, characterized by a Bilderz eugungs device (5-29) for the formation of a Copy image of an original document on a copy material, a feed device (4) for transporting the Original document to a copier with a drive device (IM2; 709), which by a period of time T can be operated beyond the period of time required for the transport and adjustment of the original document is necessary at the copy station, and a starter device (FAW; 812), which the imaging operation of the imaging device initiates after the period of time T, as a result of which a possible incorrect alignment of the original document is prevented from being copied. 10. Copier according to claim 9, characterized by a detector device (45, FDP2, ADJ) which the setting of the original document on the copier place detected and which is designed so that in response to the detection signal, the operation of the Starting device (FAW, 812) prevented. 11. Copier according to claim 9 or 10, ge ^ " denotes a start device (PF) for initiating the advance of the copy material after the start of the function of the feed device (4) and before the start of the function of the start device (FAW, 812). 909849 / G8GS - 4 - B 9693 12. Copier according to one of claims 9 to 11, characterized in that the copying material is a is seamless photosensitive material (11) from which image transfer occurs. 13. Copier according to claim 12, characterized by a rotary drive device (IM1), which the photosensitive Material (11) for cleaning the same during the period T rotates. 14. Copier, characterized by a Image generating device (5-29) for forming a copy image of an original document on a copy material (27) which has a reciprocating scanning device (15-17) for scanning the document comprises a feed device (4) for transporting the document to a copying station and for ejecting it of the document away from the copy location after the formation of the copy image of the document, a Setting device (31) for setting a desired number of the document to be produced Copies, a first control device (COPYC) designed to control the image generation device is that, in response to the adjustment device, it repeatedly reciprocates the scanning device brings about in the number selected by means of the setting device, whereby the copies in the set Number are achievable, and a second control device (ADFC), which in the last of the repeated back and forth Movements detected the arrival of the scanning device at a predetermined location and in response on the detection signal (BPS) controls the ejection of the document by means of the feeding device. 909849/0865 - 5 - B 9693 15. Copier according to claim 14, characterized in that that the predetermined point is the point at which the scanning device (15 - 17) after completion the direction of displacement changes during the scanning process. 16. Copier according to claim 14 or 15, characterized characterized in that the second control device (ADFC) is designed so that, in response to the detection signal (BPS), a subsequent original document is transported to the copy station. 17. Copier, characterized by a processing device (5-29) for forming a Copy image of an original document on a copy material (27), a feeding device (4) which is designed so that it is a first document transported to a copy station, then after the copy image formation by means of the processing device the first original document away from the copier ^ ^u ejects and then transports a second original document to the copier, a first control device (COPYC) for generating signals for controlling the function of the processing device, a second control device (ADFC) for generating Signals for controlling the function of the feeding device and a control device for controlling the Function of the feeding device in response to control signals fed by the first control device as well as to control the function of the machining direction in response to control signals supplied by the second control device. 18. Copier according to claim 17, characterized in that that the first control device (COPYC) is designed to detect an inhibition of the copy material (27) 909849/0865 - 6 - B 9693 'and a signal (CJ) to interrupt the Function of the processing device (5-29) generated and that the control device for blocking the feed of the second document in response to the detection signal for inhibiting the copy material is trained. 19. Copier according to claim 18, characterized characterized in that the control device for inhibiting the ejection of the first document original in the Document feeding device (4) in response to the detection signal (CJ) for inhibiting the copy material (27) is formed. '5 20. Copier, characterized by a feeding device (4) for feeding copy material to a copy station, one attached to the feed path Copy material detector device (44, 45), a transmitter device (202) for generating a fault test signal at a predetermined timing when controlling the feed by means of the feeder and a detection device (203) for detecting the presence of an inhibition of the copy material from the temporal relationship between the acquisition function the copy material detecting device and the interference check signal. 21. Copier according to claim 20, characterized in that that the feed device (4) is designed so that it is a period of time beyond the period of time works that the copy material needs to reach the detector device, and that the interference check signal is generated in accordance with the end of the working life of the feeder. 909849/0865 - 7 - B 9693 ' 22. Copier according to claim 20 or 21, characterized characterized in that the copy material is an original document is, the feed device (4) is designed to transport the document to a copying station and the detector device (44, 45) is an optical reflection sensor for detecting the presence of the document is at the copy point. 23. Copier, characterized by a to - '^ guiding device (4) for transporting an original document to a copying station, an image generation device (5 - 29) to form a copy image of the document document transported to the copying station, which has a lighting device (16) for illuminating the original document, an optical one Control element (45) from a luminous element (LD) and a photodetector (PT), which is located in the vicinity of the Copier is attached, and a control device that controls the optical control element in such a way, that its detection process takes place while the lighting device is out of order. 24. Copier according to claim 23, characterized in that the copying point is a glass plate (24) for the edition of the original document and that the optical control element (45) is a reflection sensor for the detection of the presence of the original document on the glass plate. 25. Copier according to claim 23 or 24, characterized characterized in that the lighting device (16) provided with a reciprocating scanning device (15 16) for scanning the original document is and that the control device is designed so that it on the optical control element (45) the execution 909849/0865 - 8 - B 9693 'tion of the acquisition process during the movement of the Scanning device effects in one direction. 26. Copier according to one of claims 23 to 25, characterized in that the optical control element (45) comprises a photodetector (PT) and a plurality of luminous elements (LD) to thereby carry out a disturbance detection or a control of the image generation . 27. Copier with a material detector device, characterized by a near the Material (147) attached luminous element (LD) j a photodetector element (PT) which detects the light emitted by the luminous element and reflected by the material to thereby detect the presence of the material, and a carrier device (151) which carries a plurality of luminous elements in connection with the photodetector element in such a way, that the ^ ^υ of the light emitting elements and reflected by the discharged material, light is directed into the photodetector element to thereby ensure the accurate detection of the reflected light by means of the photodetector element. 28. Copier according to claim 27, characterized in that the material (147) is a web and that the carrier device (151) carries the luminous elements (LD) at different distances from the web. 29. Copier, characterized by a Image generating device (5-29) for generating a copy image of an original document on a copy material, a feeding and ejecting device (4) which transports the original document to a copying station and the document for reference upon completion of the 909849/0865 - 9 - B 9693 Ejects copy image generation away from the copy point, a setting device (31) for setting a desired number of the original document to be generated Copies, a detector device (45) for determining the presence of the original document at the copy station and a control device (ADFC, COPYC) that controls the feed and ejection device and the Imaging means in response to the detector device controls in such a way that the ejection to form a copy image of the original document the same is blocked when the original document is at the copy point. 30. Copier according to claim 29, characterized characterized in that the detector device (45) is further designed to carry out a fault determination is. 31. Copier according to claim 29 or 30, characterized by a transmitter device for generating a signal (ADJ) for the interruption of the operation of the image forming means (5-29) and a device for blocking the ejection of the original document by means of the interrupt signal, wherein with "" of the control device (ADFC, COPYC) the image generation device is controllable in such a way that it copies in the number remaining from the set number Number generated. 849/0865